[Python Fabric] [SSH] Mac OS X 10.9 + vagrant Virtual Environment simple experiment using Python fabric for SSH remote login

Source: Internet
Author: User
Tags ssh server virtual environment


1. SSH client generates key
 
 
 1 $ ssh-keygen -t rsa -b 4096
 2 Generating public/private rsa key pair.
 3 Enter file in which to save the key (/Users/(username)/.ssh/id_rsa): vagrantid_rsa
 4 Enter passphrase (empty for no passphrase): 
 5 Enter same passphrase again: 
 6 Your identification has been saved in vagrantid_rsa.
 7 Your public key has been saved in vagrantid_rsa.pub.
 8 The key fingerprint is:
 9 ##...
10 $
2. Public key padding


Description: Https://teamtreehouse.com/community/vagrant-the-host-path-of-the-shared-folder-is-missing



When using vagrant, in the virtual machine. SSH folder path: (Linux)/users/yourname/path, (vagrant)/home/yourname/path



or using


 
[[email protected] /]# find / -name .ssh
/home/vagrant/.ssh
[[email protected]-centos65 /]# cd /home/vagrant/.ssh


Find the. SSH folder location


 
 
# client
$SCP./vagrantid_rsa.pub [email protected]192.168.33.10:~/.ssh/
[email protected] 192.168.33.10 's password:
Vagrantid_rsa.pub 100% 758 0.7kb /s 00:00

# used as the vm for the SSH server
[[email protected] - centos65. SSH] # ls
Authorized_keys vagrantid_rsa. Pub


After copying the public key to the SSH server:


[Email protected]. SSH cat vagrantid_rsa.pub >> Authorized_keys




3. Getting started: Hello, Fabric




$vim fabfile.py # creates a file, named fabfile.py, and defines a hello function in the file
$fab hello!
Hello world!

Done. 


Fabric website Getting Started Tutorial link: http://docs.fabfile.org/en/1.10/tutorial.html


4. Call the fabric's API for remote login


Reference:


      • Http://docs.fabfile.org/en/1.8/usage/fab.html#per-task-arguments
      • Http://docs.fabfile.org/en/1.8/usage/execution.html#host-lists


#尝试 1:



fabfile.py:


 
1 from fabric.api import run, env
2 env.hosts = [‘192.168.33.10‘]# as host1
3 
4 def taskA():
5     run(‘ls‘)
6 def taskB():
7     run(‘whoami‘)


The Terminal fab command performs tasks:


 
$ fab taskA taskB
[192.168.33.10] Executing task ‘taskA‘
[192.168.33.10] run: ls
[192.168.33.10] Login password for (username):


If the user name is not the same (not specified in env.hosts) such a way can not login to specific users.



Modify:



#尝试 2


1 # fabfile. Py
2 from fabric. API import run, env
3 env.hosts = [' [email protected] ']# multiple hosts can be specified here. Multiple host passwords need to be specified separately, not good
4 env. Passwords = {
5 '[email protected]' : "vagrant",
6}
7
8 def taskA () :
9 the run (" ls ")
10 def taskB () :
11 the run (' whoami ') 


Terminal Execution Fab command


 
$ fab taskA taskB
[[email protected]192.168.33.10] Executing task ‘taskA‘ [[email protected]192.168.33.10] run: ls
[[email protected]192.168.33.10] Login password for ‘vagrant‘: 
Sorry, you can‘t enter an empty password. Please try again. [[email protected]] Login password for ‘vagrant‘: 
[[email protected]192.168.33.10] out: httpd-2.4.17         mod_wsgi-4.4.21         pi    Python-2.7.10.tar
[[email protected]192.168.33.10] out: httpd-2.4.17.tar.gz  mod_wsgi-4.4.21.tar.gz  Python-2.7.10 [[email protected]192.168.33.10] out: 

[[email protected]192.168.33.10] Executing task ‘taskB‘ [[email protected]192.168.33.10] run: whoami
[[email protected]192.168.33.10] out: vagrant
[[email protected]192.168.33.10] out: 


Done.
Disconnecting from [email protected] done.


Still need to enter the password manually



#try 3: Set in the fab command parameter


$ fab taskA -i /Users/(username)/.ssh/vagrantid_rsa -H [email protected]192.168.33.10:22
[[email protected]192.168.33.10] Executing task ‘taskA‘
[[email protected]192.168.33.10] run: ls
[[email protected]192.168.33.10] out: httpd-2.4.17         mod_wsgi-4.4.21         pi    Python-2.7.10.tar
[[email protected]192.168.33.10] out: httpd-2.4.17.tar.gz  mod_wsgi-4.4.21.tar.gz  Python-2.7.10
[[email protected]192.168.33.10] out: 


Done.
Disconnecting from [email protected]192.168.33.10... done.


OK, you do not need to enter the password manually (the client's private key exists /users/(username)/.ssh/vagrantid_rsa)



#尝试 4



Write the key storage path in the fabfile.py, and according to the Http://docs.fabfile.org/en/1.4.0/usage/execution.html#ssh-config and HTTP/ Stackoverflow.com/questions/5327465/using-an-ssh-keyfile-with-fabric recommended, set up SSH login.



Reference:


How does I configure SSH on OS X?Http://docs.paramiko.org/en/latest/api/client.html#paramiko.client.SSHClient.connectHttp://segmentfault.com/a/1190000000497630#articleHeader0


Final code:


 
 1 from fabric.api import run, env
 2 import os
 3 
 4 if env.ssh_config_path and  5         os.path.isfile(os.path.expanduser(env.ssh_config_path)):
 6     env.use_ssh_config = True
 7 
 8 env.key_filename = [‘/Users/***/.ssh/vagrantid_rsa‘]
 9 env.hosts = [‘[email protected]‘]# as host1
10 #not using cache
11 
12 def taskA():
13     run(‘ls‘)
14 def taskB():
15     run(‘whoami‘)





END.






Resources:


Build a cross-platform development environment with VagrantAutomation Operations Tool fabric-password management (Env.password and SSH key)


[Python Fabric] [SSH] Mac OS X 10.9 + vagrant Virtual Environment simple experiment using Python fabric for SSH remote login


Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.